Burger Motorsports JB4 Tuner – BMW M2 / M235i / 335i / 435i (N55 F-Chassis)

OVERVIEW

Plug-and-play power for the F-chassis N55, including the F87 M2, with the factory DME left completely stock. The Burger Motorsports JB4 adjusts through the engine's own sensor network instead of flashing the ECU — no VIN lock, no flash counter, and it comes back off cleanly. About 20 minutes to install with hand tools.

Which version you need comes down to wastegate type and chassis, not just model year. Pneumatic wastegate cars take the JB4_PWG, electronic wastegate cars take the JB4_EWG, and early 5 and 6 Series cars with OBDII and a Type A pneumatic wastegate take the JB4_F10_A. If you are unsure, check before ordering and we are glad to help identify it.

SPECS

• Up to 60 HP and 60 lb-ft to the wheels on a stock car
• Up to 100 HP to the wheels on a fully modified car
• Multiple switchable maps, including E85 ethanol blends
• Boost-by-gear control for traction management
• Live gauges, datalogging, and fault code read and clear
• JB4_PWG version — pneumatic wastegate cars: 2012–2013 M135i, 2012–2013 335i, 2011–2013 X3, and 2012–2013 535i / 640i with the Type B connector
• JB4_EWG version — electronic wastegate cars: 2014–2015 M135i and M235i, 2016–2018 M2, 2014–2015 335i, 2014–2016 435i, 2014–2016 535i and 640i, 2013–2018 740i, 2014–2017 X3, 2014–2018 X4 M40i, and 2014–2018 X5 / X6
• JB4_F10_A version — 2011–2013 5 and 6 Series with OBDII and the Type A pneumatic wastegate connector
• Optional electronic wastegate connector for direct wastegate control on EWG cars
• No ECU flash — the factory DME is left stock
• Not VIN-locked; fully reversible
• Approximately 20-minute installation with hand tools
• Free firmware updates
• 5-year warranty
• Designed and assembled in the USA

PARTS INCLUDED

• JB4 tuner module in a billet aluminum enclosure
• Plug-and-play installation harness for the selected version (JB4_PWG, JB4_EWG or JB4_F10_A)
• JB4PRO Bluetooth adapter, built into the unit
• Free access to the JB4PRO smartphone app for iOS and Android

TECH RESOURCES

Additional Parts Required

• 91 octane or higher pump fuel — required for the advertised gains. An E85 blend is required for the ethanol maps.
• Correct JB4 version — JB4_PWG, JB4_EWG or JB4_F10_A must be matched to your car's wastegate type and connector.
• JB4PRO mobile app (free, iOS and Android) — used for map switching, gauges, logging and fault codes. The Bluetooth adapter is built into the unit, so no separate connect kit is needed.
• Optional: EWG add-on connector for direct electronic wastegate control, and the BMS Data Cable or JB4 Mobile cable for a wired laptop connection.

Installation

• BMS F Series N55 JB4 installation guide (PDF)

Notes

• Burger Motorsports does not publish a catalog part number for this JB4, so no part number is listed; order by JB4 version. E-chassis N55 cars use a different unit — see the JB4 Tuner N55 E Chassis.

VEHICLE APPLICATIONS